534results about "External electric electrostatic seperator" patented technology

The invention belongs to the technical field of air purification devices, and particularly relates to an energy storage electric field purification device which comprises a shell, the outer surface of the shell is communicated with an air outlet nozzle, and the surface of one side of the shell is fixedly connected with a filter screen. In the embodiment, the motor transmits kinetic energy to the fried dough twist stick through the driving wheel, the driven wheel, the first belt, the supporting column, the transmission gear, the driven gear, the connecting plate, the second belt and the force guiding wheel, the fried dough twist stick rotates after being stressed, a groove in the outer surface is matched with a guiding block, so that a connecting rod drives a sliding block to reciprocate on the outer surface of a sliding rail, and the sliding block drives a fixing plate to move; dust adsorbed on the outer surface of the dust collecting plate is pushed by the cleaning brush to enter the dust collecting bag through the two feeding frames and the two connecting frames, the dust is prevented from being accumulated on the outer surface of the dust collecting plate, the outer surface of the dust collecting plate is automatically cleaned, manual operation is not needed, and the use experience is improved.

The application relates to the technical field of electrostatic dust removal equipment, in particular to an electrostatic dust collecting device, an electrostatic dust removal system and an electrostatic dust collecting device design method. The electrostatic dust collecting device comprises a first metal plate, a second metal plate, a first support column, a second support column, a first positioning sleeve and a second positioning sleeve. The first metal plate and the second metal plate are parallel and arranged alternately along a first direction. The first support column and the second support column penetrate through the first metal plate and the second metal plate along the first direction. The first support column is electrically connected with the first metal plate, and the second support column is electrically connected with the second metal plate. The first positioning sleeve is arranged on the outer side of the first support column, and two adjacent first metal plates are supported through the first positioning sleeve. The second positioning sleeve is arranged on the outer side of the second support column, and two adjacent second metal plates are supported through the second positioning sleeve. According to the electrostatic dust collecting device, the machining precision of the support structure is improved, and the uniformity of the spacing between two adjacent conductive plates of the electrostatic dust collecting device is ensured.

The invention discloses a cathode wire, a cylindrical electric field and an installation method, and the cathode wire comprises a spring section, a linear section and a clamping section which are connected in sequence, and the spring section, the linear section and the clamping section are of an integrated structure. The linear section penetrates through the spring section, and the top of the linear section is fixedly connected with the top of the spring section; the spring section is used for being mounted on one side of the cathode frame; the clamping section is used for being installed on the other side of the cathode frame. According to the cathode wire, the cylindrical electric field and the installation method, the spring section, the linear section and the clamping section of the cathode wire are of an integrally-formed structure, installation accessories do not need to be additionally arranged, the installation process is greatly simplified, the clamping section and the spring section are both hidden in the cathode frame after installation is completed, only the linear section is exposed in the anode cylinder, and the installation efficiency is improved. The two ends, with complex structures, of the cathode wire can be prevented from making direct contact with lampblack, oil contamination adhesion is reduced, and the discharge effect of the cathode wire in long-term use and the purification effect of a cylindrical electric field are ensured.

To provide an air cleaner which can automatically activate an electric precipitation part 10 at the appropriate time to efficiently perform internal clean operation with ozone without deteriorating use feeling of a user, and which can prevent ozone concentration from exceeding an allowable range.SOLUTION: An air cleaner includes an automated internal clean operation control mechanism which performs internal clean operation with ozone generated by automatically activating an electric precipitation part 10 in an energization control part that activates the electric precipitation part 10 according to a detection status of a dust sensor with conditions of the internal clean operation for activation that a vehicle is in operation, cumulative operation time is a prescribed time or more, and a prescribed time or more passes after operating an operation start switch or an operation mode changeover switch.SELECTED DRAWING: Figure 2

The invention relates to the field of electrostatic dust collection, and discloses an electrostatic adsorption type dust collection device for a painting workshop, the electrostatic adsorption type dust collection device comprises a box body, and an exhaust hopper and an air inlet hopper which are fixedly connected to two sides of the box body, the bottom of the box body is fixedly connected with an ash hopper, a dust collection plate is arranged in the box body, and the front end of the dust collection plate is movably connected with a corona electrode through a connecting frame; a plate cleaning assembly for cleaning dust on the surface of the dust collecting plate is arranged inside and outside the box body; the plate cleaning assembly comprises a push rod slidably connected to the interior of the box body, the dust collecting plate is fixedly connected to the exterior of the push rod, a sliding rod is fixedly connected to the interior of the box body, the dust collecting plate is movably connected to the exterior of the sliding rod, and a cleaning and scraping unit is arranged outside the sliding rod; dust attached to the surface of the dust collecting plate is cleaned through the cleaning rod, and the dust is separated from the dust collecting plate and falls into the dust hopper in cooperation with swinging of the dust collecting plate.

The train type dust falling device comprises a front section train and a rear section train which are arranged on a track of a return airway and connected in series, a horizontal cyclone water film dust remover and an electrostatic dust remover are sequentially arranged on the front section train from front to back, and an air inlet in the front end of the horizontal cyclone water film dust remover is connected with a dust collection pipeline system. A floating dust suction hood, a transfer point dust suction hood and a plurality of working face dust suction hoods are arranged on the dust suction pipeline system, and an electrostatic generator and a counter-rotating axial flow fan are arranged on the rear section of train side by side in the left-right direction. The device can move along with the movement of the coal face, keeps a good dust collection state, and greatly improves the dust collection effect and greatly improves the air environment of the coal face of an underground coal mine in a wet dust collection and electrostatic dust collection combined mode on the premise of ensuring gas safety.

An electrostatic air filter device (1) and a method for operating the electrostatic air filter device (1) are proposed. The electrostatic air filter device (1) is designed to filter air flowing through it and comprises an ionizer (2) for ionizing air particles (3) in an electrostatic field generated by applying an electrical voltage supplied by a controllable electrical power source (21) to the ionizer (2). The electrostatic air filter device (1) further comprises an electrical control circuit (20) for controlling the controllable electrical power source (21). The electrical control circuit is configured to detect at least one current power parameter of the ionizer (2) to determine its current state and to adjust the electrical power source at least partially based on the detected power parameter.

To efficiently collect fine particles included in a gas.SOLUTION: A dust collection system includes: a flow path route through which a gas flows; a droplet supply section for supplying droplets to the flow path route; an electrostatic agglomeration unit that is arranged in the flow path route downstream from the position at which droplets are supplied, forms an electric field in the flow path of the gas, electrostatically charges the droplets and fine particles included in the gas, and causes the fine particles and the droplets to collide (agglomerate); and a dust collection section that is arranged in the flow path route downstream from the electrostatic agglomeration unit and collects the droplets and fine particles.SELECTED DRAWING: Figure 1

The utility model relates to textile setting machine tail gas treatment technical field, and disclose a kind of tail gas treatment equipment of textile setting machine, including filter box, the inside of the filter box is equipped with two chute, the inside sliding connection of chute has first filter mechanism.The tail gas treatment equipment of textile setting machine, by the setting of first filter mechanism and second filter mechanism, when carrying out pretreatment to tail gas, tail gas first enters filter box interior and carries out first filtration, by filter screen and activated carbon layer in filter box, impurity in tail gas is filtered and adsorbed, then part of small impurities will be transported to the processing box of side by pipeline, the high voltage power supply of both sides on the surface of processing box is started, high voltage power supply makes the electrostatic precipitator plate of side produce electric field, and the small impurities of surrounding electrification are adsorbed on its surface, to realize the effect of depth treatment to tail gas, improve the quality of tail gas treatment, avoid impurity to cause blockage and damage to subsequent processing equipment.

The invention relates to the technical field of agricultural instruments, and discloses a pull-type straw high-density bundling machine which comprises a first rack, a second rack, a picking mechanism and a bundling mechanism, the picking mechanism and the bundling mechanism are arranged on the inner side of the first rack, the second rack is rotationally connected with the first rack, and a first air cylinder used for driving the second rack to rotate is installed on the first rack; lifting plates are arranged on the two sides of the first rack in a sliding mode. Through the arrangement of the first partition plate, the second partition plate, the first elastic sealing strip and the second elastic sealing strip, a semi-closed operation space is constructed, and smashed grass and tree chippings, dust and other impurities raised in the straw picking and compressing stage are effectively prevented from dispersing to the outside; meanwhile, by combining the matched design of the electrostatic generator and the electrostatic plate, stable electrostatic adsorption force is generated on the surface of the electrostatic plate, suspended impurities dispersed in the operation space are rapidly captured, flying dust diffusion is restrained from the source, and the technical problem that the flying dust pollutes the operation environment in the operation process of the pull-type straw bundling machine is successfully solved.

The utility model relates to a mixing type efficient spraying flushing system which comprises a supporting frame, a flushing device and a moving part, the flushing device comprises two flushing pipes and flushing nozzles, and the two flushing pipes are both arranged on the inner side of the supporting frame; the multiple flushing nozzles are connected to the flushing pipe, and the multiple flushing nozzles can be used for flushing the anode module to be flushed; the moving part is connected to the supporting frame, the moving part can drive the flushing device to move from one end of the supporting frame to the other end of the supporting frame, the moving part comprises a middle connecting block, one side of the middle connecting block is connected with one flushing pipe, and the other side of the middle connecting block is connected with the other flushing pipe. The technical scheme has the beneficial effects that two rows of nozzles are adopted for translational motion, the number of the nozzles is reduced, the number of electric valves is reduced, and more flushing water is saved. Therefore, the problems of too many nozzles and too high dust removal cost in the prior art are solved.

The invention provides a pulverized coal concentration device based on a charge method and a control method of the pulverized coal concentration device, and belongs to the field of combustion of coal-fired boilers. The problems that a traditional inertia separation technology is low in separation efficiency and prone to abrasion in the low-load stable combustion process of the pulverized coal boiler are solved. Comprising a corona discharge device, a grounding device, a central discharge device, a concentrated pulverized coal pipeline and a light-phase pulverized coal pipeline, a guide plate is arranged at an inlet of the concentrated pulverized coal pipeline, one end of the light-phase pulverized coal pipeline is inserted into the concentrated pulverized coal pipeline, and the other end of the light-phase pulverized coal pipeline is located on the outer side of the concentrated pulverized coal pipeline; the corona discharge device is arranged on the outer side wall, corresponding to the insertion section of the light-phase pulverized coal pipeline, of the concentrated pulverized coal pipeline, the grounding device is of an annular structure and arranged on the outer side of the corona discharge device in a surrounding mode, and a wear-resistant lining is arranged on the inner wall of the concentrated pulverized coal pipeline. The device is mainly used for improving the pulverized coal concentration of the pulverized coal boiler during low-load operation.

A drift elimination system for evaporative heat rejection equipment. The drift elimination system includes a first and second set of electrodes positioned apart from one-another in the air flow downstream of the fill and spray system. The first set of electrodes, optionally in the form of needles or thin plates are energized with a positive or negative charge. The second set of electrodes, optionally in the form of wavy plates or a wire mesh are energized with the opposite charge. Water droplets passing over or through the first set of electrodes accept a charge from the first set of electrodes and are attracted to the second set of electrodes where they are collected, removing the charged droplets from the airflow, reducing water loss and abating plume formation.

The application relates to the technical field of purifiers, and discloses an electrostatic oil fume purifier and a working method thereof, which comprise a box body, a cleaning mechanism is arranged at the top of the box body, a guide mechanism is arranged on the inner wall of the box body, a transmission mechanism is arranged at the rear of the box body, an ionization plate is connected to the inner wall of the box body through bolts, the ionization plate is located at the rear of the guide mechanism, an inclined block is fixedly installed on the bottom wall in the box body, a filter plate is clamped to the inner wall of the box body and located at the rear of the ionization plate, the oil adsorbed by the cleaning mechanism can be scraped off, so that the collected oil on the dust collecting column is prevented from being too much, the dust collecting column cannot continue to adsorb oil, the oil fume cannot be purified, the practicability of the device is reduced, workers do not need to clean the dust collecting column frequently, the labor intensity of the workers is reduced, the suction range of the oil fume is increased through the guide mechanism, and the oil fume purification efficiency of the device is increased.

This invention relates to the field of flue gas purification equipment technology, specifically a two-channel linear electric field and flue gas dust removal device, including a housing, a first electrostatic field, and a second electrostatic field. The housing has an air inlet and an air outlet on its two sides along its width. The first electrostatic field is located inside the housing near the air inlet and includes two first cathode components, multiple first anode plates, and multiple first cathode wires. The second electrostatic field is located inside the housing near the air outlet and includes two second cathode components, multiple second anode plates, and multiple second cathode wires. The two-channel linear electric field disclosed in this application forms an airflow path through the air inlet and outlet of the housing. Dust-laden flue gas sequentially passes through the first and second electrostatic fields for electrostatic adsorption, significantly increasing the contact time and probability between dust and the electric field, thereby improving the dust removal effect.

The invention discloses a shield tunneling machine working face cyclone water film dust removal and electrostatic dust removal rear matching train device which comprises a cyclone water film dust remover and an electrostatic dust remover which are arranged on a front dust removal train section, and an electrostatic generator and a counter-rotating axial flow fan which are arranged on a rear dust removal train section. The front end of the electrostatic generator is connected with the electrostatic dust collector through a cable bridge, and an air outlet in the rear end of the electrostatic dust collector is connected with an air inlet in the front end of the counter-rotating axial flow fan through an air duct bridge; an air inlet at the front end of the cyclone water film dust remover is connected with a dust collection pipeline system; the dust collection pipeline system is provided with a floating dust space dust collection cover, a transfer point dust collection cover and a plurality of cutter head dust collection short pipes. The dust collection device can move along with movement of the shield working face, a good dust collection state is kept all the time, the dust collection effect is greatly improved in a wet dust collection and electrostatic dust collection combined mode, the air environment of the shield working face is fully improved, and meanwhile dust-containing air is prevented from being exhausted into the atmosphere to pollute the atmospheric environment.

The invention relates to a bipolar electrostatic scrubber (200) comprising a chamber (210), an aerosol inlet (201) for supplying aerosol comprising particles and gas molecules into the chamber (210) for purifying, a liquid inlet (211), a droplet generation unit (213) producing droplets (208), charging means charging a part of droplets (208) negatively and a part of the droplets (208) positively, a droplet separator (204) removing from the aerosol the droplets (208), and the aerosol particles and the gas molecules, which are attached to the droplets (208) due to electric fields formed between the positively and negatively charged droplets (208) through an aerosol outlet (202) for producing purified aerosol, and a liquid outlet (212) for removing droplets (208) and the aerosol particles and the gas molecules attached to the droplets (208). The invention further relates to an aerosol purification method (400) performed by the bipolar electrostatic scrubber (200).

The utility model discloses a noise reduction type electrostatic dust collection structure, which relates to the technical field of air purification and comprises a metal cabin body, an air inlet is arranged at the front end of the metal cabin body, an air outlet is arranged at the rear end of the metal cabin body, and a plurality of cathode electrode plates are arranged in the metal cabin body close to the air inlet. An anode electrode plate is arranged between every two cathode electrode plates, first cams are arranged at the front ends of the plurality of cathode electrode plates, second cams are arranged at the rear ends of the plurality of cathode electrode plates, and the convex surfaces of the first cams and the convex surfaces of the second cams are in alternate contact with the two ends of the cathode electrode plates; middle shafts are arranged in the middle positions of the first cams and the second cams in a penetrating mode, one ends of the two middle shafts extend out of one side of the metal cabin, and belt wheels are installed at the extending ends of the two middle shafts. According to the utility model, a series of structures are arranged to replace a rapping mechanism, so that the noise generated during the operation of the electrostatic dust collection structure is reduced.

This utility model belongs to the technical field of chemical production equipment and discloses a waste gas treatment device for silicone sealant production. It includes suction hoods installed at various points on the production line, which are sequentially connected via pipes to a dust collector, an incinerator, a wet electrostatic precipitator, an alkaline scrubbing tower, an induced draft fan, and a chimney. The outlet of the dust collector is connected to the inlet of the incinerator, the outlet of the incinerator is connected to the inlet of the wet electrostatic precipitator, the outlet of the wet electrostatic precipitator is connected to the inlet of the alkaline scrubbing tower, the outlet of the alkaline scrubbing tower is connected to the inlet of the induced draft fan, and the outlet of the induced draft fan is connected to the inlet of the chimney. This utility model can treat the waste gas generated during silicone sealant production, ensuring environmental and personal safety.

The invention discloses a cooling tower fog drop trapping device and method based on corona discharge, belongs to the field of manufacturing and application of electric trapping devices, and aims to achieve the purposes of efficiently trapping fog drops and recycling water mist of a cooling tower of a thermal power plant in an energy-saving manner, an insulating shell is formed into a cavity with a narrow upper part and a wide lower part, and an opening of the cavity is formed in an upper shell; the trapping net is arranged in the cavity close to the opening; the atomizing device is arranged at the lower part in the cavity to form mist; the needle electrode is arranged in the cavity between the trapping net and the atomization device; and the water storage area is arranged at the bottom of the cavity, so that the fogdrop trapping area of the trapping net is increased, and the trapping efficiency is improved.

The invention relates to a method for diagnosing an air filter device (1) for separating particles (P) from air (L) passed through the air filter unit (20), which has an ionizer (3) with at least one spray electrode (17) and with at least one counter electrode (5) and also an air filter unit (20) with a filter element (21) having an electrically conductive layer (22), wherein the electrically conductive layer (22) is electrically connected to the counter electrode (5), - according to which an electrical potential difference or high voltage (HV) is generated between the spray electrode (17) and the counter electrode (5) by means of an electrical high-voltage source (8) which is electrically connected to at least one spray electrode (17) and to at least one counter electrode (5) of the ionizer (3), which causes an electric corona current from electrical charges, in particular electrons, emerging from the at least one spray electrode (17), - according to which electrical supply current (I0) is supplied to the electrical high-voltage source (8) for the generation of the electrical corona current, which depends on the electrical corona current, - according to which this electrical supply current (I0) is determined and, depending on this, a conclusion is drawn about a current operating state of the filter element (21) and / or about a filter type of the filter element (21).

The utility model relates to wet electric dust removal equipment technical field, propose a kind of high sulphur flue gas processing with wet electric dust removal equipment with self-cleaning function, including dust removal equipment ontology, dust collection plate is installed in dust removal equipment ontology, further include connecting frame, spray washing subassembly and placing cover, connecting frame is provided with two, two connecting frames are all set in the side of dust removal equipment ontology by lifting assembly, spray washing subassembly is set on connecting frame, for spray washing to dust collection plate, the top of dust removal equipment ontology is provided with two through slots, and two placing covers are detachably installed at two through slots. Through the above technical scheme, the position of the spray nozzle is difficult to adjust when the dust collection plate is sprayed and cleaned in the prior art, thereby the problem of incomplete cleaning is solved.

The application relates to a comprehensive electric field dust removal system in a lunar environment and relates to the technical field of lunar dust prevention and control. In order to solve the technical problem that, in the prior art, lunar dust causes sealing failure of lunar equipment, thereby affecting normal operation of the equipment, mechanical jamming and shortening of the service life, and affecting observation and data acquisition, the technical scheme provided by the application is as follows: a directional dust control device is adopted, row wave directional transportation technology and electrostatic field electrode adsorption technology are adopted, the direction of lunar dust is controlled, and flying dust is adsorbed; a non-directional dust removal device is adopted, electromagnetic wave blowing technology is adopted, and lunar dust particles are removed through Lorentz force. A lunar dust prevention and control unit is further arranged and is used for providing alternating current and direct current for the directional dust control device and the non-directional dust removal device. The non-directional dust removal device adopts electromagnetic wave blowing technology and removes lunar dust particles through Lorentz force. The application can be applied to dust removal of a power supply of a moon exploration auxiliary robot.

The invention belongs to the technical field of industrial waste gas treatment, and provides a nonferrous metal flue gas treatment method. According to the invention, the non-ferrous metal flue gas is subjected to cyclone dust removal to obtain primarily purified flue gas; atomizing slaked lime slurry, spraying the atomized slaked lime slurry into the preliminarily purified flue gas, and carrying out semi-dry desulfurization to obtain desulfurized flue gas; the desulfurized flue gas is subjected to wet-type electric precipitation treatment, and wet-process purified flue gas is obtained; and mixing the wet-process purified flue gas with modified activated carbon, carrying out heavy metal adsorption treatment to obtain purified flue gas, demisting the purified flue gas, and then discharging the demisted flue gas, the modified activated carbon is activated carbon loaded with sulfide; the sulfide comprises sodium sulfide and / or potassium sulfide. The method is simple and low in operation cost, and the removal efficiency of heavy metal particles, SO2 and heavy metal steam is greatly improved by carrying out pretreatment, semi-dry desulfurization and wet electric precipitation on the non-ferrous metal flue gas and carrying out heavy metal adsorption on the flue gas by adopting active carbon loaded with sulfide.

A filter element (10), comprising: a substrate (100), at least some surfaces of the substrate (100) being arranged oppositely and in parallel; protrusions (200), the protrusions (200) being arranged on the substrate (100), such that airflow channels (400) are formed between the surfaces arranged oppositely and in parallel; and catalytic portions (300) arranged on the circumferential surfaces of the airflow channels (400). Further provided are a filter device and a fan.

The invention discloses an electrostatic filter, air purification equipment and a ventilation system. The electrostatic filter comprises a plurality of electrode plates arranged in parallel in the first direction, the electrode plates comprise first electrode plates and second electrode plates which are alternately arranged in the first direction and serve as high-voltage electrode plates and low-voltage electrode plates respectively, and a high-voltage electrostatic field is formed between every two adjacent electrode plates. The first electrode plate comprises a first insulating base material and a first conducting layer arranged on one side of the first insulating base material, the second electrode plate comprises a second insulating base material and a second conducting layer arranged on one side of the second insulating base material, and the first conducting layer and the second conducting layer are only arranged on the surface of the same side of the corresponding insulating base material and are arranged in a staggered mode in the height direction. Through the structure, the conductive edges of the adjacent electrode plates are not directly opposite any more, and a potential creepage or discharge path needs to bypass along the surface of the insulating base material, so that local electric field concentration is reduced, the possibility of discharge is reduced, and the electrode plates are suitable for electrostatic filtration with small-interval arrangement of the electrode plates.

The application discloses a wafer processing device and a semiconductor manufacturing equipment, and belongs to the technical field of semiconductor manufacturing, and aims to solve the problem that particles generated by a transfer chamber flow into a process chamber in the prior art. The wafer processing device comprises a process chamber, a transfer chamber and an isolation valve. The process chamber is connected with the transfer chamber, the isolation valve is arranged at a connecting position of the process chamber and the transfer chamber, and the isolation valve controls opening and closing of a transmission channel between the process chamber and the transfer chamber. The isolation valve comprises an inner plate, a filter, an outer plate and a driving unit. The filter is arranged between the inner plate and the outer plate. Before wafer loading or unloading, the driving unit drives the inner plate and the outer plate to open, and the filter filters air flow entering the process chamber. When the wafer is loaded or unloaded, the driving unit drives the filter to open, and the transmission channel between the process chamber and the transfer chamber is opened. The application can reduce wafer defects and improve yield.

The invention relates to the technical field of waste gas treatment, in particular to a metallurgical electric furnace waste gas treatment device which comprises a gas inlet chamber, a gas outlet chamber, purification pipes fixedly mounted between the gas inlet chamber and the gas outlet chamber and corona wires arranged in the purification pipes. A first spraying mechanism, a second spraying mechanism and a supporting frame are arranged in the air outlet chamber, the supporting frame is fixedly mounted in the air outlet chamber, a plurality of uniformly distributed mounting seats are fixedly mounted at the top of the supporting frame, and two flow guide plates and mounting brackets are arranged on the outer sides of the corona wires. An adjusting mechanism is arranged at one end of each mounting base, and a connecting mechanism and a pushing mechanism are arranged in each mounting support. The device has the beneficial effects that the problems that in the prior art, a spraying type spray head cannot effectively wash the corona wire, so that impurities outside the corona wire are gradually accumulated, discharge of the corona wire is inhibited, and the dust removal efficiency is reduced are solved.

The invention relates to an electrostatic air filter device (6), in particular for a motor vehicle (1), with a flow channel (7) for guiding an airflow (5), with an ionization device (9) for ionizing particles carried in the airflow (5), which has at least one spray electrode (10) and at least one counter electrode (11) in the flow channel (7), and with a filter element (8) for filtering out the particles from the airflow (5), which is arranged in the flow channel (7) downstream of the ionization device (9) and which has a multi-layered filter body (13) with at least one particle filter layer (14) and at least one electrically conductive layer (15). The separation efficiency of the air filter device (9) can be improved, especially in the long term, by electrically connecting the at least one electrically conductive layer (15) to the at least one counter electrode (11) via an electrical resistor (16).

The utility model discloses a waste gas collecting and treating device for a die-casting machine, relates to the technical field of waste gas treatment of die-casting machines, and aims to provide a waste gas collecting and treating device for a die-casting machine, which is large in opening and closing space and free of shielding and limiting objects. An opening and closing component is arranged on one side of the collecting box, an exhaust component is arranged on the other side of the collecting box, a driving component for driving the opening and closing component is arranged below the collecting box, and a horizontally split collecting cover is arranged in the opening and closing component. The device has the technical effects that the opening and closing component and the collecting cover are arranged, the driving component drives the opening and closing component to rotate outwards, so that the opening and closing component drives the collecting cover to rotate and unfold towards the two sides, the opening and closing component protrudes out of the collecting box, the maximum unfolding angle of the collecting cover can reach 180 degrees, and the purpose of replacing a rail support is achieved; and the influence on discharging of the die-casting machine and die replacement work caused by the distance between the rails is avoided.